| 1 |
Environmental factors causing abnormal development are grouped together as. |
- A. Toxins
- B. Carcinogens
- C. Teratogens
- D. Mutagens
|
| 2 |
Neural plate is formed from |
- A. Ectoderm
- B. Endoderm
- C. Mesoderm
- D. Notochord
|
| 3 |
Parathyroid hormone acts to ensure that |
- A. Calcium levels in the blood never drop too low
- B. Sodium levels in urine are constant
- C. Potassium levels in the blood do not escalate
- D. The concentration of water in the blood is sufficient
|
| 4 |
Clear cytoplasm, in an ascidian zygote produces. |
- A. Muscle
- B. Gut
- C. Notochord and neural tube
- D. Larval epidermis
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| 5 |
From Hensen's node,dorsal mesoderm is formed and is organized into |
- A. Segments
- B. Fragments
- C. Somitcs
- D. Remains
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| 6 |
Oxytocin is secreted by the endocrine gland named: |
- A. Pituitary gland
- B. Thyroid gland
- C. Parathyroid gland
- D. Adrenal gland
|
| 7 |
The mesodermal cells do not invaginate but migrate medially and caudally from both sides and create a midline thickening called. |
- A. Hensen's node
- B. Primitive streak
- C. Hypoblast
- D. epiblast
|
| 8 |
The unspecialized cells present in flatworm and Planaria are. |
- A. Neoblast
- B. Osteoblast
- C. Osteoclast
- D. Chondrocyte
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| 9 |
Which one of the following condition is resulted from excess GH in adults? |
- A. Cushing's disease
- B. Acromegaly
- C. Hyperthyroidism
- D. Diabetes mellitus
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| 10 |
In which developmental stage, germ layers are formed. |
- A. Cleavage
- B. Blastula
- C. Gastrula
- D. Organogenesis
|